Chrome OS Post Boot Diagnostics

No symptoms information.

No cause information.

Table of Contents:

1. Overview
2. How to Access the Diagnostics Tool
3. Running the Diagnostics and Test Results

Overview

The new Chrome OS diagnostics tool can be used to investigate the battery, processor, and memory status of a Chromebook in real time.

You can run troubleshooting test routines, where results and telemetric information can be saved in a session log file. This can be used to assist with the following:

• Streamline the troubleshooting process.
• Easier knowledge transfer and sharing of results.
• Enable Support Agents to identify the best cost-effective fix and to validate a solution.

When should the Diagnostics tool be used?

• The Chromebook battery is draining fast.
• The Chromebook is running slow.
• The Chromebook is having memory problems.

Back to Top

How to Access the Diagnostics Tool

You can use the following two methods to access the diagnostics tool.

With the Launcher

1. At the bottom left of the screen, select the Launcher (Figure 1).
   
   Figure 1
    
2. Locate the Omnibox (Figure 2).
   
   Figure 2
    
3. Type Diagnostics in the Omnibox to locate the tool (Figure 3).
   
   Figure 3
    

With the Settings

1. At the bottom right of the screen, select the Status Tray (Figure 4).
   
   Figure 4
    
2. Select Settings (Figure 5).
   
   Figure 5
    
3. Select Search (magnifying glass) (Figure 6).
   
   Figure 6
    
4. Type Diagnostics into the Settings search bar. Select Diagnostics in the search results (or press the Enter button) (Figure 7).
   
   Figure 7
    
5. Under About Chrome OS, locate and select Diagnostics to open the App (Figure 8).
   
   Figure 8
    
6. Select the diagnostic you would like to run (Figure 9).
   
   Figure 9
    

Back to Top

Running the Diagnostics and Test Results

Use the following steps to run the diagnostics and save the test results.

1. Select Run Charge Test (Figure 10).
   Assess discharge rate.
   *The Chromebook should be unplugged from AC power for the battery test.
   
   Figure 10
    
2. If a test fails in any of the three testing routines, you may investigate more from the Help Center (Figure 11).
   
   Figure 11
    
3. A faster way to investigate why certain tests have failed is clicking “Why has this test failed?” (Figure 12)
   
   Figure 12
    
4. If a test fails, session logs will be saved by clicking Save session log (at the bottom of the Diagnostics tool) (Figure 13).
   
   Figure 13
    
5. You can download the .txt file and share it using chat support, email, or verbally on the phone (Figure 14).
   
   Figure 14
    

Diagnostic logs are only available on Chrome OS devices running version 90 and above. Learn More About Updating a Chromebook's Operating System

Back to Top